Device for producing permanent undulation



Aug. 14, 1923. 1,464,867

BElQHENBERGER ,Y .Y

DVICE FOR PRODUClNG PERMANENT UNDULATION vFiled SBP'. l1. 1922 2Sheets-Sht l 1W. 5 Wag/#.6 my? l0 14a y W Aug. 14, 1923. 1,464,867

R. EICHENBERGER DEVICE FOR PIRODUGING PERMANENT UNDULATION Filed Sept.'11, 1922 2 sheets-sheet 2 Patented ug. 14, 1923 RUDOLF EICHENBERGER, FZURICH, SWITZERLAND.

DEVICE FOB PRODUGING PERMANENT UNDULATION.

Application led- September 11, 1922. Serial No. 587,412.

To all whom t mal/y concern:

Be it known that I, RUDOLF EICHENBER- GER, citizen of thfe Republic ofSwitzerland, residing at Rennweg 35, Zurich, Switzerland, have inventeda certain new and. useful Improvement in a Device for ProducingPermanent Undulation, of which the following is-a specification,reference being had therein to the accompanying drawing.

In order to produce an undulation effect on hair and particularly onwomens hair that remains for a long time, it is known to subject thelatter to a treatment in which single plaits of hair are moistened witha liquid and are wound around sticks which' are then placed insideelectrically heated tubes hung up on wires supplying the electriccurrent. By this treatment a drying of the hair and a permanentundulation of the' latter results. Y

According to the present invention the device for producin permanentundulation comprises a curl-stlck shaped as a tube for winding the hairthereon and a heating cylinder adapted to receive the curl stick, a cordbeing lixed with its one end to said curl stick, the other end of thecord passing through the hollow curl stick and forming a loop in whichthe end of the plait of hair can be clamped. A second tube may beloosely mounted inside the curl-stick, a spring being provided whichtends to pull; a conical portion at one end of the inner tube into theouter tube and to prevent thereby a turning motion of the two tubesrelatively to each other.l The curl-stick may also be provided withllaterally projecting members which maybe detachab y arranged, and aroundwhich the plaits of hair may be wound in order to produce a special Wavevof Fig. 1,

Fig. 5 is a plan view of the heating cylinder, some parts bein partlyremoyed,

Fig. 6 shows a cur -stck according to a Fig. 9 shows. on an enlargedscale a .curlstick according to a second constructional example,

10 is a longitudinal section and Flg. 11 is a side view of thecurl-stick according to Fig. 9.

yReferring now to the heating cylinder illustrated in Figs. 1-5, 1denotes an inner tube having apertures 2 approximately in the middle ofits length, so that the upper and the lower part of tube-1 are connectedtogether by narrow bridge-parts 3. Around the upper part a heating body4 is arranged and around the lower part a heating body 5 1s prov1ded,the heating eiect of the heating body 4 being weaker than that of theheating body 5, caused for instance by alesser number of windings of theheating wire coil. 6 denotes a cover or shell.- Between the latter andthe heating bodies there is the heating space 7. This space 7 is in itslower part in connection with the surrounding air by means of air inletports 8 and in its upper part by means of air exit ports 9. The cover isprovided with two apertures 11 leaving narrow bridge parts 12 yof thesolid material; the apertures 11 being arranged between'the heating body4 and the switch 10 made of an insulating material, for instance oflibre., The switch 10 is of a known construction; by turning the pins 13around the axis ofthe heating cylinder through a determined angle thecurrent is cut in and out. A plurality of heating cylinders aresuspended in a known manner from the wires 14?i supplying the electriccurrent i'n order to treat several plaits of hair simultaneously.

The curl-stick according to Figs. 6-8 comprises an outer tube 14, inwhich an inner tube 15 is loosely inserted. A compression spring 16which bears with its one end against a collar 17 on the inner tube 15and with its other end against the tube 14 vtends to pull the inner tubeinto the outer tube 14 in the direction of the arrow shown in Fig. 7.The inner tube is provided at its one end with` a conical portion 18,the latter being partl 4 ulled into the tube 14 by the pressure o t espring 16, as is shown in.

Fig. 7. When the conical portion 18 bears against the outer tube 14 itacts like a conefriction coupling and any turning of the tubes 13 and 14relatively to each other is prevented. If a pressure is exerted on theinner tube in the direction of the arrow shown in Fig. 6 the conecoupling is put out of action and the tube 14 may be turned on tube 15.One end of a cord 19 is fixed to the conical part 18, the other end 20of the cord passes through the tube 15, in this manner a loop 21 isformed.

The afore described device is worked as follows:

The loop 21 is placed around a plait of hair 22 near the head and isclamped by pulling the loop together. Thereafter the plaitof hair iswound around the curlstick in the manner illustrated in 'F ig. 8 and theupper end 23 of the plait is fastened by means of the end 20 of thecord, the cord 20 being thereby clamped in between the coils of thespring 16. In order to still further tighten the windings of the plaitof hair on the tube 14 pressure is applied to the collar 17 so that thetube 14 can be turned rel.

atively to the tube 15, which is held stationary, by this turning motionthe plait of hair is tnsioned. Then the wound hair is covered by thewadding 24 being wound around it and further by an envelope of paper 25,which envelope is tied together at its lower end 26, the upper end beingleft untied so that any vap'our can escape. Now the heating cylinder isplaced over this enveloped part of the hair on the head, the envelopefilling up the inner pipe 1. Thereafter the current. is switched in andthe hair thus treated is subjected toa drying action for some time.

The circulation of air through the apertures 8 and 9 presents theadvantage, that the cover 6 does not become so hot as to cause a burningin case the cover comes inadverteutly into touch with the head. Theheating effect by means of the heating body 4 is weaker than that of theheating body 6, as the hair is in its natural state already dryer at itsends than at its roots. ,For this reason the apertures 2 are providedwhich prevent .any comparatively great transmission of heat from thelower part to the upper part of the tube. The apertures 11 serve toprevent as much as possible a transmission of heat to the-switch 10.Another advantage of the device consists in the fact that in consequenceof the provision of the loop 21 below the conical part 18 a heatinsulating pad is formed of the portion of the hair passing through theloop. With other known apparatus the skin of the head came into touchwith the curl-stick at this very spot whereby a disagreeabletransmission of heat resulted.

In the constructionalvexample illustrated in Figs. 9-11 the curl-stickcomprises a tube 28, into which laterally projecting members 29 areinserted. The members 29 are provided with holes 30 at their partsrotruding intothe tube, so that all the mem ers 29 can be secured inposition by means of a rod 31 penetrating through said holes 30. Themembers 29 are provided with oblong heads 32. To the lower end of thetube 28 a cord 2O is fastened for forming the loop 21. With thiscurl-stick the plait of hair can be Wound around the former in a morecomplicated manner than shown in Fig. 8, as the plait 22 on being woundaround the tube 28 can also be wound around the members 29. After thehair Wound upon the curlstick 28 has been treated in the heating tubeand the latter has been removed, the rod 31 is pulled out'of the tube 28and all the members 29 can be removed so that the pla-it of hair canreadily betaken oif the curl-stick.

I claim:

1. In a device of the t pe described, a tubular curl-stick for win ing aplait of hair thereon, and a cord having its one end xed to saidcurl-stick and its other end passing through the bore of said tubularcurl-stick to form a loop for conveniently clamping one end of the plaitof hair to be permanently curled.

2. In a device of the type described, a curl-stick comprising an outertube and an inner tube, a conical enlargement on one end of the innertube and frictionally engaging with the bore of the outer tube, a springinterposed between the other ends of said tubes and adapted to presssaid conical enlargement against said bore, and a cord having its oneend fixed to the inner tube and its other end passing throu h the boreof the inner tube for convenient y clamping one end of the plait of hairto be permanently curled.

3. A device of the ytype .described comprising in combinationv atube-shaped curlstick for winding a plait of hair thereon, a cord havingits one end fixed to said curl-stick and its other end passing throughsaid curl-stick to form a loop for clamping one end of the plait ofhair, and a. heating device comprising an inner tube adapted to take upsaid curl-stick with the hair wound around it said inner tube beingprovided with apertures situated in the middle of the length of thetube, at least one heating device, an outer shell distanced from thatheating member, the s ace between the latter and the outer shell bemg incommunication with the surrounding atmosphere.

4. A device of the type described `comprising`4 in combination a tubeshaped curlstiolr for Winding a plait of hair thereon, a cord having itsone end xed to said curlstick and its other end passing through said tleaner curl-stick to form a loop for clamping one end' of the plait ofhair, and a heating device comprising an inner tube adapted to take upsaid curl-stick with hair wound around it, said inner tube beingprovided A with apertures situated in the middle of the length of thetube, at least one heating device, an outer shell distanced from thatheating member, the space between the latter and the outer shell beingin communication with the surrounding atmosphere, a switch mounted onthe top of the heating device and separated from the' inner tube and theheating member by means of. apertures provided in the former and in saidshell.

5. A. device of the type described comprising in combination a tubeshaped curlstick for Winding a plait of hair thereon, laterallyprojecting members on said curlstick around which members the plait ofhair can be Wound, a cord having its one end fixed to said curl-stickand its other end passing along said curl-stick to form a loop forclamping one end of the plait of hair, and a heating tube adapted totake up said curlstick with the hair wound around it.

6. A. devicev of the type described comprising in combination a tubeshaped curlstick lfor winding a plait of hair thereon laterallyprojecting members detachably arranged on said curl-stick around whichmembers the plait of hair can be wound, a oord having its one end ixedto said. curl-stiel: and its other end passing along said curlstick toform a loop for clamping one end of the plait of hair, and a heatingtube adapted to take up said curl-stick with the hair wound around it.

7. A device of the type described comprising in combination a tubeshaped curl-stick for winding a plait of hair thereon, laterallyprojecting memmrs detachably arranged on said curl-stick around whichmembers the plait of hair can be Wound, a cord having its one end fixedto said curl-stick and its other end passing through said curl-stick toform a loop for clamping one end of the plait of hair, and a heatingdevice comprising an inner tube adapted to take up said curl-stick withthe hair wound around it said inner tube being provided with aperturessituated in the middle of the length of the tube, at least one heatingdevice, an outer shell distanced from that heating member, the spacebetween the latter and the outer shell being in communication with thesurrounding atmosphere, a switch mounted on the top o the heating deviceand separated from the inner tube and the heating member by means ofapertures provided in the former and. in said shell.

ln testimoni7 whereof l ama my signaturea RUDLB ElCHENBERGER.

